Executives at the failing New York-based bank, which lost more than $28 billion over the last year and a half, agreed earlier this week to curb massive corporate expenses - including use of the four jets and one helicopter the company owns.

Weill, 75, who now serves as a senior advisor to the Citigroup chain, said last year that he will give up access to the private planes in April 2009.

The ex-CEO used the $45 million Bombardier Global Express jet to carry himself, his wife Joan, and his daughter Jessica and her family to the exclusive One & Only Palmilla Resort, the Post reports.

Rooms at the resort, where Eli Manning was married last April, can go for upwards of $10,000 a night for a four-bedroom suite.

The jet Weill took to Mexico features a full bar, crystal stemware, and and "pillows made from Hermes scarves," a former crew member told the Post.

Weill and his family stayed for nine days in Mexico. Industry experts told the Post that the estimated cost to charter a private plane for a trip like Weill's would be between $70,000 and $90,000.